It's split between three big players this year.
Samsung:
The core feature Samsung has been touting all MWC long has been the ability of its tablets to run 4 application windows at once. Useful, of course, but… Nothing else?
LG:
How long have you been dreaming of a curved mobile phone? Me neither, but the engineers at LG are very happy with its curved battery and screens. The phone doesn't feel specially awesome either.
Sony:
Speaking of dreams, we've been always waiting for a waterproof tablet, don't we? No? Yeah. Sony thinks otherwise. In any case, after seeing the impressive feats of the HZO guys I'd rather purchase a water-proofer from them and use the tablet I like.